Prep work involved was relatively simple. Disassemble controllers (Nes and a junk genesis one), Desolder wires from respective pcbs. Then desolder the 4021 ic from the nes controller pcb. After that I had grabbed the DB9 pinout for the Atari 8bit/2600. Using a DMM I determined which colour wire was which pin. Writing this down on paper for future reference.

I then installed six 10kohm resistors for up, down, left, right, A, B. These resistors are then all wired to 5 volts. Soldered in the wires as determined by the online pin-out. Plugged the controller in and the result was as followed:Left button was Left,Down button was Right,Right button was up; andUp button was Down.A and B were correct.

So even though every chart I could find online said it was correct. It didn't work as it should have. Proceeded to check my work 3 times. To err is human, I guess. I later discovered that the majority of the charts online were diagrams of the connector on the console, not the controller cable. It was simple enough to take note of the wire colours and their current function and location. Then proceeded to desoldered said mistakes, and move them respectively to the correct locations. I also bridged a wire between the UP and B Button. So I could use the B button as the torpedo fire button in Beamrider.

​​I'm not responsible for damage to you or your equipment. Do this mod at your own risk.

March 9th, 2018Vs Super Mario Bros NES ReproAfter talking to a fellow producer of reproductions. They peaked my interest into getting back into doing NES repros. I mainly do snes and genesis rom hacks, region exclusives, and translations.

Like most other nrom & cnrom nes boards. It is also jedec drop in compatible. This means their is no re-wiring required. Unlike most other repros, this one uses nmos eproms. Two 27256 to be more precise. First tried to experiment using two cmos 27c256 eproms, this failed. However, the nmos eproms worked like a charm.

A reproduction pcb wasn't used. In this case a SAROM board (Dragon Warrior) was sacrificed for this rom hack.

It is one intense game. The great people at Rusted Logic/Wixsoft did the rom hack to get the arcade port to the NES, more faithful. Patch can be found here.